Huntleigh SonicaidTeam, Operator'S Manual, Page: 67 / 113

Sonicaid Team Operator’s Manual
67
Abnormalities
Double asterisks indicate one of the following conditions:
z
Fetal heart rate < 116 bpm or > 160 bpm on a record of less than 30 minutes
z
Decelerations > 100 lost beats (> 20 lost beats on record of less than 30 minutes)
z
No moves and fewer than 3 accelerations
z
No episodes of high variation
z
Short-term variation < 3ms
z
No accelerations, and either < 21 movements per hour or long-term variation in
episodes of high variation below the tenth centile
z
Long-term variation in episodes of high variation below the first centile
A single asterisk indicates one of the following conditions:
z
Short term variation < 4 ms, but ≥ 3ms
z
Basal heart rate < 116 bpm or > 160 bpm on a record ≥ 30 minutes
z
Decelerations present, but not meeting the criteria for size or record length
A single asterisk does not necessarily mean that the record cannot pass the criteria.
If all other parameters are normal at the 30-minute point, the abnormality could be
considered to be within acceptable limits to meet the analysis criteria.
Basal heart rate warnings
A basal heart rate of 115 bpm or lower triggers a printed warning on the analysis
report:
WARNING: LOW BASAL FHR
CHECK THAT FHR DOES NOT CONTINUE TO FALL
FETAL MOVEMENTS PRESENT? SINUSOIDAL RHYTHM?